For nearly a century, Culligan has been pioneering water filtration. Starting with Emmett Culligan's very first filter madeout of a coffee can and greensand back in 1921, we've been on the forefront of innovation in water treatment. Today, Culligan continues our efforts to bring the purest, softest, cleanest water into homes, offices, restaurants, and industrial facilities around the world. Our complete line of water softeners, water filtration systems, commercial and industrial water treatment solutions,drinking water systems, whole-house filtration systems and bottled water delivery set the standard in the water treatment industry.